Manufacturer description: As of April 2018 the Venus Optics Laowa 17mm F4 Zero-D GFX lens is the widest available native lens option for Fujifilm G-mount cameras. The lens has a field of view equivalent to 13mm in 35mm format (113°). Featuring a close-to-zero distortion and 86mm filter thread, this lens is ideally suited for landscape, architecture & interior photography. The 21 elements in 14 groups design with 2 pieces of aspherical & 3 pieces of Extra-low dispersion elements successfully help to control the distortion & chromatic aberrations to the minimal.